Affiliation:
1. Department of Hydraulic and Water Engineering , Lviv Polytechnic National University , Karpinsky Str. 6/103 , , Lviv , Ukraine
Abstract
Abstract
Experimental regulating parameters of the non-stationary expansion of air inside a bladder-type hydraulic accumulator, working with the simple short pipeline, are presented in the paper. The technique of continuous online monitoring of changes in time of volume and absolute air pressure inside the hydraulic accumulator during the discharge process has been improved. Three series of experimental studies of transient gas processes inside the accumulator at different values of the average volume flow rate are made. Tendencies of change of the integral parameters of the hydraulic accumulator are obtained and analyzed depending on the serial number of the discharge cycle. A general dependence of dimensionless storage volume Kreg
on the polytropic index n in series # 1–3, approximated by single power-law dependence, is obtained. The systematic changes of integral parameters in each subsequent discharge cycle can be explained by the non-stationary transient thermodynamic processes in air inside the accumulator until the thermodynamic equilibrium with the ambient air parameters is reached.
Reference15 articles.
1. [1] Shi Y., Yang S., Pan X. and Liu Y. (2019): Effects of a bladder accumulator on pressure pulsation of urea dosing system.– IEEE Access, vol.7, pp.157200-157211.10.1109/ACCESS.2019.2944199
2. [2] Zhuk V.M., Verbovskyi O.V., Popadiuk I.Yu. and Zavoiko B.V. (2016): Storage volume of the hydraulic accumulator of the automated water pumping station (in Ukrainian).– Bulletin of the National University, Lviv Polytechnic, Theory and Practice of Construction, vol.844, pp.91-95
3. [3] Morozov A.V., Pityk A.V., Ragulin S.V., Sahipgareev A.R., Soshkina A.S. and Shlyopkin A.S. (2017): Estimation of influence of boric acid drop entrainment to its accumulation in the WWER reactor in the case of accident.– Reports of Higher Educational Institutions. Nuclear Energy, vol.4, pp.72-82.10.26583/npe.2017.4.07
4. [4] Bravo R.R.S., De Negri V.J. and Oliveira A.A.M. (2018): Design and analysis of a parallel hydraulic-pneumatic regenerative braking system for heavy-duty hybrid vehicles.– Applied Energy, vol.225, pp.60-77.10.1016/j.apenergy.2018.04.102
5. [5] Kumar A., Dasgupta K. and Das J. (2017): Analysis of decay characteristics of an accumulator in an open-circuit hydrostatic system with pump loading.– Proceeding of the Institution of Mechanical Engineers, Part I: Journal of Systems and Control Engineering, vol.231, No.4, pp.312-326.10.1177/0959651817700780
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